Lecithoblast
Historical document, translated for reference. It reflects medical knowledge of the 1920s–30s and is not medical advice.
Summary
Lecithoblast is an old embryological term denoting an accumulation of large, yolk-rich cells within the endoderm of amphibian embryos. These cells lie at the floor of the gastrula and bulge into its cavity, forming the floor of the intestinal cavity and resorbing very slowly.
Encyclopedia entry (1928–1936)
LECITHOCLAST, lecithoblastus (from the Greek lekithos meaning yolk and blastos meaning germ), yolk germ, synonym lecithadenia, yolk gland, an old embryological term designating an accumulation of large, yolk-rich cells that are part of the endoderm, which lie at the floor of the amphibian gastrula and bulge into its cavity. This accumulation, analogous to the yolk sac of fish, continues to exist in subsequent stages of development, forming the floor of the intestinal cavity, and is resorbed very slowly.
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Cite this page
“Lecithoblast.” Soviet Medical Encyclopedia. English translation of Bolshaya Meditsinskaya Entsiklopediya, 1st ed. (Moscow, 1928–1936), ed. N. A. Semashko. https://sovietmedicalencyclopedia.pages.dev/article/lecithoblast/